VIASYS Vmax Encore, Техническое справочное руководство

Страница: 67 / 86

Technical Reference Manual
Vmax Encore
L2707
3–13
Chapter 3 Maintenance and Troubleshooting
CO
2
Analyzer Zero Adjustment
The CO
2
analyzer’s zero voltage must be adjusted to ensure proper operation. The adjustment
procedure is outlined below.
1. On the Analyzer Controller board, connect the DVM positive lead to TP3 (CO
2
) and the neg-
ative lead to AGND (analog ground).
2. Turn on the sample pump by pressing “F6 Sample Pump” (an “X” in the box next to the
label). Turn on valve H.
3. Adjust R17 to 0.00 V dc ± 0.50 V dc.
4. Turn off the sample pump by pressing “F6 Sample Pump” (a blank box next to the label).
Turn off valve H.
Multi-gas Analyzer CO Zero
The Multi-gas analyzer’s CO zero voltage must be adjusted to ensure proper operation. The
adjustment procedure is outlined below.
1. On the Analyzer Controller board, connect the DVM positive lead to TP2 (CO
2
) and the neg-
ative lead to AGND (analog ground).
2. Turn on the sample pump by pressing “F6 Sample Pump” (an “X” in the box next to the
label).
3. Adjust R38 to 0.00 V dc ± 0.50 V dc.
4. Turn off the sample pump by pressing “F6 Sample Pump” (a blank box next to the label).
Multi-gas Analyzer CH
4
Zero
The Multi-gas analyzer’s CH
4
zero voltage must be adjusted to ensure proper operation. The
adjustment procedure is outlined below.
1. On the Analyzer Controller board, connect the DVM positive lead to TP4 (CH
4
) and the neg-
ative lead to AGND (analog ground).
2. Turn on the sample pump by pressing “F6 Sample Pump” (an “X” in the box next to the
label).
3. Adjust R20 to 0.00 V dc ± 0.50 V dc.
4. Turn off the sample pump by pressing “F6 Sample Pump” (a blank box next to the label).